Notices of Memoirs — E. T, Newton — On Dicynodonts. 515 



At pp. 564r-5, seven groups of Ceratiocaridce are defined, according 

 to their segments, etc. 



Page 565. Echinocaris sublevis. Whitfield, 1880, pi. xii. figs. 12-14. 



Page 567. E. jmstulosa, Whitfield, 1880, pi. xii. fig. 13. 



Page 568. E. muUinodosa, Whitfield, 1880, pi. xii. fig. 16. 



From the Erie shales of Ohio ( = Portage and Chemung groups of 

 New York State). See Amer. Journ. Science, third series, vol. xix. 

 p. 36, etc., 1880. 



At p. 572. Aristozoe canadensis, Whitfield, 1880, pi. xii. figs. 17 

 and 18, from the Trenton formation in the Ottawa basin of Canada. 

 Locality unknown. Introduced for comparison. 



See also Report British Association for 1885 [1886], p. 35. 



4. The illustrated description of Discinocaris Dusliana, by Prof. 

 0. Novak, in the Geological Magazine, 1892, p. 148. This is one 

 of three specimens found by Herr Dusl in the strata of the " Colouie 

 Haidinger," Bohemia, and referred to by Mr. J. E. Marr, F.G.S., iu 

 the Quart. Journ. Geol. Soc, vol. xxxvi. 1880, p. 617. 



5. The fauna of the Lower Cambrian, or Olenellus Zone, by 

 Charles D. Walcott (Tenth Annual Report of the U.S. Geological 

 Survey, 1891 ?) ; Protocaris Marshi, Walcott, p. 629, pi. Ixxxi. 

 fig. 6 (Bull. U.S. Geol. Surv., No. 30, 1886, p. 148, pi. xv. fig. 1) :— 

 an obscure subquadrate test (?), with a many-segmented body and 

 a furcate caudal appendage (see our Seventh Report for 1889 

 [1890], p. 64). 



IV. —On some BlCYNOBONT AND OTHER REPTILIAN REMAINS FROM THE 



Elgin Sandstone. By E. T. Newton, F.G.S., F.Z.S. 



T the Aberdeen meeting of the British Association, in 1885, Dr. 

 Traquair called attention to the skull of a Dicynodont which 

 had been discovered in the Elgin Sandstone of Cutties' Hillock 

 (=:New Spynie). Since that time several other specimens have 

 been obtained from the same place, some of which are the property 

 of the Elgin Museum, while others belong to the Geological Survey 

 of the United Kingdom. These specimens are now being worked 

 out by the author, and this communication is a preliminary note on 

 the interesting results which have been obtained. 



All the reptile remains obtained from Cutties' Hillock are in the 

 condition of hollow casts, the bones themselves having been dissolved 

 away ; this, it will be remembered, was the case with some of the 

 examples of Stagonolepis from the Elgin Sandstone, described by 

 Prof. Huxley, and the method of taking casts from the hollow 

 cavities, which was adopted in that case, has been found of great 

 advantage in the present instance. The blocks when brought from 

 the quarry were more or less split open, exposing portions of the 

 specimens. In some cases these cavities were traced out and 

 developed with the chisel, while in others they were farther split 

 open, thus allowing casts to be taken. In many cases these casts 

 had to be made in several parts and afterwards fitted together. 

 The time and labour involved in this task have been repaid by the 



